Elizabeth Abernathy Tarpley, Giles Co.TN

According to the Giles County Lineage book this Elizabeth Abernathy married Thomas Tarpley, the brother of Caty Tarpley who married John Abernathy and of Alexander Tarpley who married Caty Abernathy.Who were Elizabeth Abernathy's parents and who were the children of Thomas Tarpley and Elizabeth Abernathy.